The following table represents the distance travelled by car with time in a fixed direction. Time s 0 1 2 3 4 Displacement m 0 10 20 30 40 Draw a distance-time graph using the above data and with its help, find the distance travelled by car at the end of 2 . 5 s .

From the graph, taking the corresponding y coordinate to the time 2 . 5 s , we get the distance travelled by the car to be 25 m . Note: If an object moves along a straight line, the distance travelled can be represented by a distance-time graph. In a distance-time graph, the gradient of the line is equal to the speed of the object.

The following table represents the distance travelled by a car with time in a fixed direction. Time s 0 1 2 3 4 Displacement m 0 10 20 30 40 Draw a distance-time graph using the above data and with its help, find the speed of the car.

As we know, the slope of the displacement-time curve gives the value of speed in a fixed direction. Here, the slope of the graph is constant. So the speed of the car is constant. Speed of the car v = Slope of the graph v = y 2 - y 1 x 2 - x 1 = 40 - 0 4 - 0 = 10 m / s